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Northwest Africa 13350
Basic information Name: Northwest Africa 13350
     This is an OFFICIAL meteorite name.
Abbreviation: NWA 13350
Observed fall: No
Year found: 2019
Country: (Northwest Africa)
Mass:help 4.32 kg
Recommended:  L4    [explanation]

This is 1 of 1709 approved meteorites (plus 24 unapproved names) classified as L4.   [show all]
Search for other: L chondrites, L chondrites (type 4-7), Ordinary chondrites, and Ordinary chondrites (type 4-7)
Comments: Approved 27 Jun 2020
Writeup from MB 109:

Northwest Africa 13350 (NWA 13350)

(Northwest Africa)

Purchased: 2019 Oct

Classification: Ordinary chondrite (L4)

History: Purchased by Grant Harkness in October 2019 from a dealer in Zagora, Morocco.

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Well-formed chondrules (relatively small, except for one very large 3.6 mm diameter PO chondrule in the studied thin section) are set in a relatively coarse grained matrix containing stained kamacite, troilite, chromite, merrillite and taenite.

Geochemistry: Olivine (Fa25.6±0.2, range Fa25.3-25.8, N = 6), low-Ca pyroxene (Fs21.3±0.3Wo1.3±0.4, range Fs20.9-21.6Wo0.9-1.7, N = 5), augite (Fs7.3±0.4Wo45.5±0.5, range Fs7.0-7.7Wo45.0-46.0, N = 3). Magnetic susceptibility log χ (× 10-9 m3/kg) = 4.74.

Classification: Ordinary chondrite (L4).

Specimens: 26.2 g including one polished thin section at PSF; remainder in the Harkness Collection.

Data from:
  Table 0
  Line 0:
Place of purchase:Zagora
Date:P 2019 Oct
Mass (g):4316
Shock stage:S2
Weathering grade:W1/2
Fayalite (mol%):25.6±0.2
Ferrosilite (mol%):21.3±0.3
Wollastonite (mol%):1.3±0.4
Classifier:A. Irving, UWS, and P. Carpenter, WUSL
Type spec mass (g):26.2
Type spec location:PSF
Main mass:Harkness Collection
Comments:Work name HC-12; submitted by A. Irving
   and collections
PSF: Planetary Studies Foundation,10 Winterwood Lane, Unit B, Galena, Illinois 61036-9283, United States; Website (institutional address; updated 1 Dec 2011)
UWS: University of Washington, Department of Earth and Space Sciences, 70 Johnson Hall, Seattle, WA 98195, United States (institutional address; updated 15 Jan 2012)
WUSL: Washington Univ., One Brookings Drive, St. Louis, MO 63130, United States (institutional address; updated 17 Oct 2011)
References: Published in Meteoritical Bulletin, no. 109, in preparation (2020)
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     This is 1 of 7937 approved meteorites from (Northwest Africa) (plus 1960 unapproved names)

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